Wheel-rim.



F. R. BARKER.

WHEEL RIM.

APPLICATION FILED mmm, 191;.

1,020,678. Patented Mar. 19, 1912 ZSHEETS-SHBET 1.

Witnesses: 1

UN TED STATES PATENT oFFIoE,

FREDERIGRUTHERFORD BARKER- OF BOSTON, MASSACHUSETTS.

WHEEL-31M.

Specification of Letters Patent.

Patented M ar. 19, 1912'.

Application filed March 21, 1911. Serial No: 615,916.

4 To all whom it may concern is pernianently secured to the telly of the wheel and is provided with a detachable bead which facilitates the removal of the tire from the'ri'm. In the use of demountable rims, it is customary to have one or more spare rims with ready inflated tires thereon so that in case.of a puncture or other injury to one of the tires in use on the vehicle, the injured tire with its rim may be removedand replaced by another demountable rim and ready inflated tire.

Oneof the objects of my invention is to provide a wheel rim which shall have the advantages of both types of rimsheretofore employed. In other words, the object is to provide a rim so constructed and arranged that in case a tire should become punctured or otherwise injured, the tire may be removed together' with its demountable rim from the permanent rim and replaced by another demountable rim and ready inflated tire,'or, if desired, the demountable rim may be taken apart to permit the tire to be removed, repaired and replaced thereon with great facility. This object is attained by providing a permanent rim and a demountable rim mounted thereon and consisting of a plurality of rings-means to secure these rings to each other, and means to secure the demountable rim to the permanent rim. Since the parts of the demountable rim are normally locked to each other, the tire may be inflated upon the demountable rim when the same is off of the permanent riin which. of course, would be impossible if the parts were not so locked to each other for the reason that the internal pressure of the tire would force the parts of the rim away from each other.

Still other objects appear hereinafter.

To these ends, my invention consists in the novel features of construction and in the combination and arrangementof parts set forth in the following specification and parand advantages will 'ticularly pointed out in the claims.

Referring to the drawings: Figure 1 is a side elevation of a rim containing my invention. in connection with a wheel and tire. Fig. 2 is an enlarged detail side elevation of a portion of the rim, tire and wheel, I

showing the means for securing the demountable rim to the permanent rim. Fig.

3 is a sectional view taken on line 3-3-of Fig. 2, looking toward the right, showing in place upon the permanent rim a divisible demountable rim. Fig. 4 is a sectional view similar to Fig. 3, showing the retaining ring in expanded position preparatory to removing the same. Fig. 5 is an enlarged detail view of the inner circiunferential surface of the divisible demountable rim illustrating the means for attaching the two parts of the rim to each other. Fig. 6 is a sectional view taken on line 7--7 of Fig. Fig.7is an enlarged detail sectional view taken on line 83 of Fig. 2. Fig. 8 is an enlarged detail sectional view taken on line 99 of Fig. 2, looking toward the left.

- Like numerals refer to like parts throughout the several views of the drawings.

In the drawings, 10 is a wheel which may be of any usual or desired construction having secured to its periphery a rim 11 which will be referred to as the permanent rim.

sinceit remains attached to the wheel.

Mounted upon this permanent rim is a demountable rim which is composed of a plurality of rings. as shown in Figs. 4. 5 and (S, the number of parts in the present instance being two designated by the numerals l2 and 13, respectivclv. and abutting against each other at 14. These two parts when placedtogether are preferably of substantiallv the same form and dimensions as a,

I Standard mm 101 a tire 15 of the clencher type, which is provided-with a usual inner tube 16.

The permanent rim 11 is provided at one side with a shoulder 17 consisting of a circumferential flange and at its other side is provided with a circumferential groove 18'. The flange 17 forms an abutmentwfor a ring 19 having a laterally inclined outer circumferential surface 20 against-which an inner laterally inclined circumferential surface 21 of the ring 12 of the demountable rim rests. The ring 19 is made separate from the permanentrim 11 so as to be capable of' being removed and reversed. fThe demountable rim, as beforev stated, consists of two rings 12 and 13. These rings are provided with suitable means to lock them to each other consisting of a plurality of plates 23, (see Figs. 2, 5 and 6), each of I which is provided with a pair of slots 24 and 25 to receive projections 26 and 27 provided on the rings 12 and 13, respectively, these projections preferably consisting of studs provided with-heads 28 and 29 which are larger in diameter than the width of the straight portions of the slots in which they are respectivelylocated and said slots are provided with enlarged portions 30 and 31, respectively, which are of'such size as to permit the plate 23 to be disconnected from the studs by sliding the same along a wire and pivotally mounted upon the pivots 23,

23" fast to the ring 12 from the position shown in Fig. 5 into such a position that the heads of the studs will register with the en- The slots 24 in other words, they are gradually widened from their smaller ends toward their enlarged portions 30 and '31 and it will be noted that the widening of' the slots occurs on their outer edges, that is to say, it does not occur on the edges which are adjacent to each other. The purpose'of this I widening of the slots is to provide a means whereby after the parts have been assembled, as shown in Figs. 6 and 7, and the demountable rim has been applied to the permanent rim,

the vibration and the strain of'the parts.

will cause the plates 23 'tovslide along until the stu-ds 26 and 27 occup nthe widened portions ofthe slots 24 and 25,-.thus permitting the pressure of the inflatedtire to act' to press the ring 13 against the retaining'ring 34 and the ring 12 against the. ring, 20.-

Hence, since the air pressure of the tlre'is exerted against the sides ofthe permanent rim, the tire has a gripping or clenching action which holds it to the rim after the manner of the well known clencher tire. A

wire 23, it will be understood, is provided for each of the plates 23 and constitutes a pivot for each of said plates, respectively. to'swing upon. The plates being slidablv whereby the plate may be easily moved. one

way or the'other. The rings 12 and 13 are preferably provided with recesses 33, each of which is formed partly in the ring 12 and partly in the ring 13 and designed to re- 'ceive the plates 23, each of these recesses being of such extent as to allow the plates to be movedto and fro to lock and unlock the same. It will. be understood that the plates just described normally lock the rings 12 and 13 of the demountable rim to each other, so that the tire may be inflated when the demounta-ble rim i's'ofl of the permanent rim. These plates, however, may be easily and quickly unlocked from the studs .26, 27 by sliding them along the pivotal wires 23', as hereinbefore described, and the rings 12 aid 13 separated from each other to facilitate the removal of the tire therefrom.

The demountable rim is normally locked in place on the permanent rim by a retaining ring 34 provided with a lateral recess 35 to receive the sideof'the demountablo rim, this recess being provided'with an inner laterally inclined circumferential surface 36 which fits against a correspondingly shaped outer circumferential surface 37 of the part 13 of the demoun table rim, as shown in Fig. The retaining ring 34 is expansible and contractible and to that end is interrupted or, in other words, divided or cut at 38, see Figs. 1 and 2, and is preferably sdmade that when released it will ex pand" from the position shown in Fig.3 to the position shown in Fig. 4, or, in other Words, it will rise out of the groove 18 in whichit is normally located.

The-retaining ring 34 is provided with suitable .means for changing its diameter and for this purpose the following mechanism is preferably provided. The ring 34 is provided with two lugs 39 and 40 located on opposite sides of the cut 38, said lugs extending inwardly through a suitable slot .41 provided in the permanent rim 11, see

Fig.2, this slot being preferably open along its outer side, as clearly shown in said figure. The lug 39 is preferably provided witha recess 42 and the lug 35 is preferably provided with a corresponding recess 43. the recess 42 receiving a suitable abutmentpreferably consisting of a stud 44 having screw-threaded engagement with :1 lug 45 on .thepermanent rim 11.so as to be capable of being adjusted to vary the force exerted bythe clamping mechanism hcrei'nbefore described. The recess 43 receives a correspondingly shaped end of a lever 46 ful crumed on a pivot 47 upon a pair of links toward said recess for the-purpose of auto- 60 cess 35 of the retaining ring 3% and when 148, said links being fulciriimediipon a pivot '49 upon the stud 44. The lever 46 is interposed betwecn't-he links 18 and the lugs '34 and 35 ai'ealso'interposed between said links. 1l1emechanism justdescribed constitutes a powerful toggle which, when swung from "the position shown" in dotted lines in Fig. 2

to the position shown in full lines therein,- lwill very forcibly draw the lugs 39 and40 10 toward each other, thus contracting the retaining ring 34.

Preferably, the fulcrum 47, the fulcrum 49 and the end of the lever 46 engaging the lug 40 as a fulcrum all lie in a substantially straight line so that the toggle naturally tends to remain locked in its normal position. As an additional safeguard, however, there is provided a suitable spring-pressed latch 50, see Figs. 2 and 7, interengaging' with the lever 46 in a suitable manner, preferably by providing said lever with a recess 51. in its end to .receive said latch and preferablysaid lever is provided with an inclined surface 52 adjacent to and inclined matically retracting the latch when thelever is swung into its normal position, in which case the latch will ride up said incline and snap into the recess 51 under the influence 3 of a. suitable spring 53.

The latch 50 is preferably mounted to slide in a lug fiat provided on the permanent rim 11, said lug being provided with a lateral slot 55 and said latch being provided 5 with a. recess 56 which is accessible through said slot so that some suitable instrument may be inserted through said slot into said recess in order that the latch may. be withdrawn from the recess 51. The latch 50, see Fig. 8, which is preferably cylindrical in form, is held against rotation by suitable means such, for example, as a cotter pin 57 located in agroove 58, this pin also serving as a means for preventing said latch from traveling too far under the influence of the-spring 53. I a I do not claim herein the features of the. latch'just described, but these features are claimed in a co-pending application filed by me February 7, 1911, Serial No. 607,195. Referring now to Fig. 2, the lugs 39 and -40 are preferably provided with similar projections 59 and (30 and the lu 45 is provided with a correspondingly shaped recess "61 to receive the projection 59. When the demountable rim is slipped into place, the

laterally inclined surface 21 of said rim engages the corresponding laterally inclined surface 20 of the ring 19 and the other side of the demountable rim is located in the rethis ring is contracted, as shown in Fig. 3, the laterally inclined innercircumferential surface 36- engages the correspondiugly shaped outer circumferential surface 37 of g 65 the demountahlerim, thus crowding saidi .rim forcibly toward t-lie'left against th inclined surface of the .ring .19. lhi.-, of course, binds the demou'nt'able rim firmly in place. y

It will bc' obserited that when the retaining ring 34 is expanded vfrom .;t.he position shown in Fig. 3 to :thexposition shown' in Fig. 4, th inner circumferential esurface of said ring becomes substantially coincident with the outer circumferential surface of the permanent rim 11 and since the slot 41 is open at the side, said ring may then "be withdrawn outwardly'from its place so as to permit the removal of the demoiintable rim.

It .will now be evident .that if the tire when arranged upon the-rim, :as shown in Fig. 3, should become punctured .or otherwise injured so that it becomes necessary .to remove the same for repair, this may Ebe'accomplished by removing the retaining ring 34., as .hereinbefore described, and ztlien slipping the tire 15 with 't-lie-demountableaim from their place upon the permanent aim. The two parts Hand 13 of :tlie idei'noimtable rim may then be unlocked .and separated from each other in the manner herembefore described, whereupon the inner at ibe may he removed ,for repair. If, however, it ?be Sclesired to substitute a ready inflated tire for the one just removed, there willibe provided a demountablerim which is .a-tlu ilicate of that already described, -it being evident that by constructing the demountable rinr in ithis manner the tire may be --inflated thereon 10.0

when thedemountable rim .is -oif ofitlie zpe1- manent rim and it will be understood that under these circumstances it 'islessential .that

the two-parts ofthe demoimtable shall be locked to each other sons to 'lio'ldithe jt ire when it is inflated.

Having-thus described anyinvent'ionmvhat I claim and desire by Letters Iatent :to :se-

cure is:

1. The combination ofa permanentzrim,.a i

demountable rim composed-ofa plurality :of rings mounted upon said permanent rim, and means to secure said rings 10 eac'h other' comprising a plurality ofgpla'tes provided with slots extending circumferentially =of'11'5 said rings, andprojections on -said rings, respectively, located in said slotse-and roridedwith heads larger than the wilt ofthe portions of said slots in'which said *pins are normally located, said slots having 'aenlargcd portions through which said gh'eads mayube withdrawn, and said slots'be'ing avidened along their outer edges stromitheir smaller ends toward said enlarged portions.

:2. The combination of a permanent rim, a demountable rim composed of a plurality of rings mounted upon said permanent'r'im' and provided witha plurality of recesses formed partly in each of aid riugs,.-and means located in said rcer ses for securing 13o 5 said rings to each other, said means com- In testimony whereof I have hereunto set lively, located in said slots, and pivots fast' Witnesses:

prising a pluralipy of plates located in said my hand in presence of two subscribing witrecesses, respectively, and provided with nesses. X slots, and projections on said rings, respec- FREDERIG RUTHERFORD BARKER.

to one of said, rings upon which said plates CHARLES S. Goonme,

are pivotally and slidably-mounted. DANIEL A. ROLLINS. 

